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GB Patent: GB-499,945
Improvements in combined surfacing and boring machines
Patentee:
Henry Ward Lionel Kearns (exact or similar names) - Broadheath, Manchester, England

USPTO Classifications:

Tool Categories:
metalworking machines : drilling and boring : horizontal boring mills
metalworking machines : milling machines

Assignees:
H. W. Kearns & Co., Ltd. - Broadheath, Manchester, England

Manufacturer:
H. W. Kearns & Co., Ltd. - Broadheath, Manchester, England

Witnesses:
Unknown

Patent Dates:
Applied: Aug. 05, 1938
Granted: Jan. 31, 1939

Patent Pictures:
Espacenet patent
Report data errors or omissions to steward Jeff Joslin
Vintage Machinery entry for H. W. Kearns & Co., Ltd.
Description:
"The facing slide c, Fig. 1, of a combined boring and surfacing machine is displaced by means of a spiral face cam or scroll plate f driving a rack h connected to the slide, through the intermediary of a helical pinion which meshes directly with the spiral face cam. The scroll plate f, Fig. 1, is driven in known manner from differential gearing o, p. The facing slide may be slotted to provide for the boring bar e, Fig. 2, in which case two racks h are provided on the facing slide, one on each side of the slot, and the helical pinions i are arranged on a common shaft at right-angles to the racks. The pinions may, however, be arranged on separate shafts, radially with respect to the scroll plate and inclined to the racks. In a further arrangement, a single helical pinion meshing with the scroll plate is used, and spur wheels arranged on the shaft of the pinion engage with the racks on the facing slide."

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